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Bike Leans To The Left

 
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mikeyb
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Joined: 07 Oct 2011
Posts: 30
Location: Michigan
Stella

PostPosted: Thu Sep 26, 2013 8:43 pm    Post subject: Bike Leans To The Left Reply with quote

No kidding, my 4T seems to lean to the left while I drive straight. Could this be an alignment issue? Has anyone else seen or heard of this with the stella? Bike has been babied and never been dropped.
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ScootLemont
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Joined: 11 Apr 2008
Posts: 2530
Location: Lemont IL
2008 Stella

PostPosted: Thu Sep 26, 2013 9:04 pm    Post subject: Reply with quote

Is this a new thing or has it always done this?
How many miles on it?
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RoadRambler
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Joined: 31 May 2011
Posts: 181
Location: South of Richmond, VA
Psycho "Black Magic", RH "Dragonfly", Blur "Goblin", Blur "Warlock"

PostPosted: Thu Sep 26, 2013 9:17 pm    Post subject: Reply with quote

Does it do this with other drivers? You might be leaning yourself without realizing it??
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Robbie
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Joined: 25 Apr 2012
Posts: 537
Location: Desplaines Il.
2009 Stella 2T/ Many others

PostPosted: Thu Sep 26, 2013 10:22 pm    Post subject: Reply with quote

All the Stella's, shifter Vespa's, LML Star (overseas Stella) exibit this but few notice it.
You are counteracting the weight of the engine.....the right side of the machine is heavier than the left.
Remove the spare tire.....you will lean even more.

No worries,
Rob
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mikeyb
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Joined: 07 Oct 2011
Posts: 30
Location: Michigan
Stella

PostPosted: Fri Sep 27, 2013 12:20 pm    Post subject: Reply with quote

I haven't noticed any changes in handling and I can't say I ever consciously noticed leaning until it was pointed out to me by a fellow rider. I can tell that the weight of the motor influences cornering. It almost acts as a gyro of sorts. My concern was more about alignment. I don't see any unusual wear in the treads and I have 2500 miles on the Stella. - Interesting...
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SockyTX
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Joined: 14 Jul 2012
Posts: 168
Location: Grapevine, TX
2012 Stella 4T

PostPosted: Fri Sep 27, 2013 4:33 pm    Post subject: Reply with quote

I had never realized I was doing it until I recently lead our club's ride and the rider behind me said you were leaning to the left during the ride. My Stella has 7500 miles on her and I have never experienced any problem with handling or irregular tire wear
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mikeyb
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Joined: 07 Oct 2011
Posts: 30
Location: Michigan
Stella

PostPosted: Fri Sep 27, 2013 4:38 pm    Post subject: Reply with quote

OK, so I will ask the question. How do I stop leaning? Is it my seating position? I thought I was seated in the center. My feet are positioned equally on either side right where they should be?

Any suggestions would be appreciated.

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stASH
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Joined: 20 Apr 2012
Posts: 119
Location: Richmond, VA
'08 Buddy 150 Italia, '12 Dijon Stella

PostPosted: Fri Sep 27, 2013 6:04 pm    Post subject: Reply with quote

It's a physics thing. The center of balance of the bike while stationary is slightly to the right of center due to the weight of the engine. In order for a bike to go straight while moving, the center of balance must be over the centerline of the bike. So therefore, if you are sitting on the centerline of the bike, there has to be a slight lean to the left for the bike to be balanced. I suppose that if you sit just left of center, to counteract the imbalance, the bike might not lean. However, this might not really feel comfortable.
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Stilts
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Joined: 23 Jun 2011
Posts: 281
Location: Baltimore, MD
2012 Stella 4T

PostPosted: Fri Sep 27, 2013 8:13 pm    Post subject: Reply with quote

mikeyb wrote:
OK, so I will ask the question. How do I stop leaning? Is it my seating position? I thought I was seated in the center. My feet are positioned equally on either side right where they should be?

Any suggestions would be appreciated.


Why do you want to stop leaning? By leaning you are keeping the bike going straight. As noted just above, it's simple physics. Don't worry about it.

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PeteH
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Joined: 17 Jan 2011
Posts: 2290
Location: 3603mi SE of Dutch Harbor
'09 Italia 150, '80 P200E

PostPosted: Fri Sep 27, 2013 10:17 pm    Post subject: Reply with quote

Anyone ever notice uneven tire wear? Just curious.
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ericalm
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Joined: 10 Jun 2006
Posts: 17670
Location: Los Angeles, CA
STELLA FOUR STROKE FURY! + Vespa LX 150/190 + '87 Honda Helix CN250

PostPosted: Fri Sep 27, 2013 11:34 pm    Post subject: Reply with quote

Robbie wrote:
All the Stella's, shifter Vespa's, LML Star (overseas Stella) exibit this but few notice it.
You are counteracting the weight of the engine.....the right side of the machine is heavier than the left.
Remove the spare tire.....you will lean even more.

No worries,
Rob

Most of those also pull to the right a bit, but I haven't experienced or felt it at all with the 4T. (Doesn't mean it's not happening, just might not be as noticeable.)

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fisher1
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Joined: 08 Sep 2012
Posts: 188
Location: Pa

PostPosted: Sat Sep 28, 2013 6:17 pm    Post subject: Reply with quote

Its because you're sitting a bit to the left on the seat. just sit a tad more to the right and it will straighten up. The vertical axis is related to the tire patch on the road and the bike's lateral center of gravity.

Think about it, if the scoot was stationary and your feet were on the ground, how would you shift your butt to lean the scoot to the right?

You can see this with some riders on motorcycles that have the motor balanced in the middle rather than on the side like a Stella. Mc or scoot, it's related to the bike & rider's total combined C-G which is effected by your seating position.
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johnk
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Joined: 03 Sep 2018
Posts: 58

2012 Stella 4T

PostPosted: Mon Nov 19, 2018 9:07 pm    Post subject: Reply with quote

Should the bike do a similar thing even while parked on the centerstand? In other words, is the lean built in?
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